期刊
FOOD CHEMISTRY
卷 190, 期 -, 页码 374-380出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2015.05.098
关键词
Se; Glucosinolates; Sulforaphane; Myrosinase activity; Health-promoting compounds; Broccoli sprouts
Broccoli sprouts are natural functional foods for cancer prevention because of their high glucosinolate (GSL) content and high selenium (Se) accumulation capacity. The regulation mechanism of Se on GSL metabolism in broccoli sprouts was explored. In particular, the effects of Se treatment (100 jimol/L selenite and selenate) on the Se, sulfur (S), glucosinolate and sulforaphane contents; myrosinase activity and health-promoting compounds (ascorbic acid, anthocyanin, total phenolics and flavonoids) of three, 5 day old, cultivars were investigated. The treatment did not influence the total GSL and ascorbic acid contents; significantly increased the myrosinase activity and sulforaphane, anthocyanin and flavonoids contents; and decreased the total phenolics content. The increase in sulforaphane during early growth can be primarily attributed to the increased myrosinase activity caused by Se treatment. Broccoli sprouts with suitable selenite and selenate concentrations, in the early growth days, could be desirable for improved human health. (C) 2015 Elsevier Ltd. All rights reserved.
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